import itertools
import os
import platform
import re
import subprocess
import sys
import errno
import lit.util
from lit.llvm.subst import FindTool
from lit.llvm.subst import ToolSubst
lit_path_displayed = False
def user_is_root():
# os.getuid() is not available on all platforms
try:
if os.getuid() == 0:
return True
except:
pass
return False
class LLVMConfig(object):
def __init__(self, lit_config, config):
self.lit_config = lit_config
self.config = config
features = config.available_features
self.use_lit_shell = False
# Tweak PATH for Win32 to decide to use bash.exe or not.
if sys.platform == "win32":
# Seek necessary tools in directories and set to $PATH.
path = None
lit_tools_dir = getattr(config, "lit_tools_dir", None)
required_tools = ["cmp.exe", "grep.exe", "sed.exe", "diff.exe", "echo.exe"]
path = self.lit_config.getToolsPath(
lit_tools_dir, config.environment["PATH"], required_tools
)
if path is None:
path = self._find_git_windows_unix_tools(required_tools)
if path is not None:
self.with_environment("PATH", path, append_path=True)
# Many tools behave strangely if these environment variables aren't
# set.
self.with_system_environment(
["SystemDrive", "SystemRoot", "TEMP", "TMP", "PLATFORM"]
)
self.use_lit_shell = True
global lit_path_displayed
if not self.lit_config.quiet and lit_path_displayed is False:
self.lit_config.note("using lit tools: {}".format(path))
lit_path_displayed = True
if platform.system() == "OS/390":
self.with_environment("_BPXK_AUTOCVT", "ON")
self.with_environment("_TAG_REDIR_IN", "TXT")
self.with_environment("_TAG_REDIR_OUT", "TXT")
self.with_environment("_TAG_REDIR_ERR", "TXT")
self.with_environment("_CEE_RUNOPTS", "FILETAG(AUTOCVT,AUTOTAG) POSIX(ON)")
# Choose between lit's internal shell pipeline runner and a real shell.
# If LIT_USE_INTERNAL_SHELL is in the environment, we use that as an
# override.
lit_shell_env = os.environ.get("LIT_USE_INTERNAL_SHELL")
if lit_shell_env:
self.use_lit_shell = lit.util.pythonize_bool(lit_shell_env)
if not self.use_lit_shell:
features.add("shell")
self.with_system_environment(
[
"ASAN_SYMBOLIZER_PATH",
"HWASAN_SYMBOLIZER_PATH",
"MSAN_SYMBOLIZER_PATH",
"TSAN_SYMBOLIZER_PATH",
"UBSAN_SYMBOLIZER_PATH" "ASAN_OPTIONS",
"HWASAN_OPTIONS",
"MSAN_OPTIONS",
"RTSAN_OPTIONS",
"TSAN_OPTIONS",
"UBSAN_OPTIONS",
]
)
# Running on Darwin OS
if platform.system() == "Darwin":
features.add("system-darwin")
elif platform.system() == "Windows":
# For tests that require Windows to run.
features.add("system-windows")
elif platform.system() == "Linux":
features.add("system-linux")
elif platform.system() in ["FreeBSD"]:
features.add("system-freebsd")
elif platform.system() == "NetBSD":
features.add("system-netbsd")
elif platform.system() == "AIX":
features.add("system-aix")
elif platform.system() == "SunOS":
features.add("system-solaris")
elif platform.system() == "OS/390":
features.add("system-zos")
# Native compilation: host arch == default triple arch
# Both of these values should probably be in every site config (e.g. as
# part of the standard header. But currently they aren't)
host_triple = getattr(config, "host_triple", None)
target_triple = getattr(config, "target_triple", None)
features.add("host=%s" % host_triple)
features.add("target=%s" % target_triple)
if host_triple and host_triple == target_triple:
features.add("native")
# Sanitizers.
sanitizers = getattr(config, "llvm_use_sanitizer", "")
sanitizers = frozenset(x.lower() for x in sanitizers.split(";"))
if "address" in sanitizers:
features.add("asan")
if "hwaddress" in sanitizers:
features.add("hwasan")
if "memory" in sanitizers or "memorywithorigins" in sanitizers:
features.add("msan")
if "undefined" in sanitizers:
features.add("ubsan")
if "thread" in sanitizers:
features.add("tsan")
have_zlib = getattr(config, "have_zlib", None)
if have_zlib:
features.add("zlib")
have_zstd = getattr(config, "have_zstd", None)
if have_zstd:
features.add("zstd")
if getattr(config, "reverse_iteration", None):
features.add("reverse_iteration")
# Check if we should run long running tests.
long_tests = lit_config.params.get("run_long_tests", None)
if lit.util.pythonize_bool(long_tests):
features.add("long_tests")
if target_triple:
if re.match(r"^x86_64.*-apple", target_triple):
features.add("x86_64-apple")
host_cxx = getattr(config, "host_cxx", None)
if "address" in sanitizers and self.get_clang_has_lsan(
host_cxx, target_triple
):
self.with_environment(
"ASAN_OPTIONS", "detect_leaks=1", append_path=True
)
if re.match(r"^x86_64.*-linux", target_triple):
features.add("x86_64-linux")
if re.match(r"^i.86.*", target_triple):
features.add("target-x86")
elif re.match(r"^x86_64.*", target_triple):
features.add("target-x86_64")
elif re.match(r"^aarch64.*", target_triple):
features.add("target-aarch64")
elif re.match(r"^arm64.*", target_triple):
features.add("target-aarch64")
elif re.match(r"^arm.*", target_triple):
features.add("target-arm")
if re.match(r'^ppc64le.*-linux', target_triple):
features.add('target=powerpc64le-linux')
if not user_is_root():
features.add("non-root-user")
use_gmalloc = lit_config.params.get("use_gmalloc", None)
if lit.util.pythonize_bool(use_gmalloc):
# Allow use of an explicit path for gmalloc library.
# Will default to '/usr/lib/libgmalloc.dylib' if not set.
gmalloc_path_str = lit_config.params.get(
"gmalloc_path", "/usr/lib/libgmalloc.dylib"
)
if gmalloc_path_str is not None:
self.with_environment("DYLD_INSERT_LIBRARIES", gmalloc_path_str)
def _find_git_windows_unix_tools(self, tools_needed):
assert sys.platform == "win32"
import winreg
# Search both the 64 and 32-bit hives, as well as HKLM + HKCU
masks = [0, winreg.KEY_WOW64_64KEY]
hives = [winreg.HKEY_LOCAL_MACHINE, winreg.HKEY_CURRENT_USER]
for mask, hive in itertools.product(masks, hives):
try:
with winreg.OpenKey(
hive, r"SOFTWARE\GitForWindows", 0, winreg.KEY_READ | mask
) as key:
install_root, _ = winreg.QueryValueEx(key, "InstallPath")
if not install_root:
continue
candidate_path = os.path.join(install_root, "usr", "bin")
if not lit.util.checkToolsPath(candidate_path, tools_needed):
continue
# We found it, stop enumerating.
return lit.util.to_string(candidate_path)
except:
continue
return None
def with_environment(self, variable, value, append_path=False):
if append_path:
# For paths, we should be able to take a list of them and process
# all of them.
paths_to_add = value
if lit.util.is_string(paths_to_add):
paths_to_add = [paths_to_add]
def norm(x):
return os.path.normcase(os.path.normpath(x))
current_paths = self.config.environment.get(variable, None)
if current_paths:
current_paths = current_paths.split(os.path.pathsep)
paths = [norm(p) for p in current_paths]
else:
paths = []
# If we are passed a list [a b c], then iterating this list forwards
# and adding each to the beginning would result in c b a. So we
# need to iterate in reverse to end up with the original ordering.
for p in reversed(paths_to_add):
# Move it to the front if it already exists, otherwise insert
# it at the beginning.
p = norm(p)
try:
paths.remove(p)
except ValueError:
pass
paths = [p] + paths
value = os.pathsep.join(paths)
self.config.environment[variable] = value
def with_system_environment(self, variables, append_path=False):
if lit.util.is_string(variables):
variables = [variables]
for v in variables:
value = os.environ.get(v)
if value:
self.with_environment(v, value, append_path)
def clear_environment(self, variables):
for name in variables:
if name in self.config.environment:
del self.config.environment[name]
def get_process_output(self, command):
try:
cmd = subprocess.Popen(
command,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=self.config.environment,
)
stdout, stderr = cmd.communicate()
stdout = lit.util.to_string(stdout)
stderr = lit.util.to_string(stderr)
return (stdout, stderr)
except OSError:
self.lit_config.fatal("Could not run process %s" % command)
def feature_config(self, features):
# Ask llvm-config about the specified feature.
arguments = [x for (x, _) in features]
config_path = os.path.join(self.config.llvm_tools_dir, "llvm-config")
output, _ = self.get_process_output([config_path] + arguments)
lines = output.split("\n")
for (feature_line, (_, patterns)) in zip(lines, features):
# We should have either a callable or a dictionary. If it's a
# dictionary, grep each key against the output and use the value if
# it matches. If it's a callable, it does the entire translation.
if callable(patterns):
features_to_add = patterns(feature_line)
self.config.available_features.update(features_to_add)
else:
for (re_pattern, feature) in patterns.items():
if re.search(re_pattern, feature_line):
self.config.available_features.add(feature)
# Note that when substituting %clang_cc1 also fill in the include directory
# of the builtin headers. Those are part of even a freestanding
# environment, but Clang relies on the driver to locate them.
def get_clang_builtin_include_dir(self, clang):
# FIXME: Rather than just getting the version, we should have clang
# print out its resource dir here in an easy to scrape form.
clang_dir, _ = self.get_process_output([clang, "-print-file-name=include"])
if not clang_dir:
print(clang)
self.lit_config.fatal(
"Couldn't find the include dir for Clang ('%s')" % clang
)
clang_dir = clang_dir.strip()
if sys.platform in ["win32"] and not self.use_lit_shell:
# Don't pass dosish path separator to msys bash.exe.
clang_dir = clang_dir.replace("\\", "/")
# Ensure the result is an ascii string, across Python2.5+ - Python3.
return clang_dir
# On macOS, LSan is only supported on clang versions 5 and higher
def get_clang_has_lsan(self, clang, triple):
if not clang:
self.lit_config.warning(
"config.host_cxx is unset but test suite is configured "
"to use sanitizers."
)
return False
clang_binary = clang.split()[0]
version_string, _ = self.get_process_output([clang_binary, "--version"])
if not "clang" in version_string:
self.lit_config.warning(
"compiler '%s' does not appear to be clang, " % clang_binary
+ "but test suite is configured to use sanitizers."
)
return False
if re.match(r".*-linux", triple):
return True
if re.match(r"^x86_64.*-apple", triple):
version_regex = re.search(
r"version ([0-9]+)\.([0-9]+).([0-9]+)", version_string
)
major_version_number = int(version_regex.group(1))
minor_version_number = int(version_regex.group(2))
patch_version_number = int(version_regex.group(3))
if "Apple LLVM" in version_string or "Apple clang" in version_string:
# Apple clang doesn't yet support LSan
return False
return major_version_number >= 5
return False
def make_itanium_abi_triple(self, triple):
m = re.match(r"(\w+)-(\w+)-(\w+)", triple)
if not m:
self.lit_config.fatal(
"Could not turn '%s' into Itanium ABI triple" % triple
)
if m.group(3).lower() != "windows":
# All non-windows triples use the Itanium ABI.
return triple
return m.group(1) + "-" + m.group(2) + "-" + m.group(3) + "-gnu"
def make_msabi_triple(self, triple):
m = re.match(r"(\w+)-(\w+)-(\w+)", triple)
if not m:
self.lit_config.fatal("Could not turn '%s' into MS ABI triple" % triple)
isa = m.group(1).lower()
vendor = m.group(2).lower()
os = m.group(3).lower()
if os == "windows" and re.match(r".*-msvc$", triple):
# If the OS is windows and environment is msvc, we're done.
return triple
if isa.startswith("x86") or isa == "amd64" or re.match(r"i\d86", isa):
# For x86 ISAs, adjust the OS.
return isa + "-" + vendor + "-windows-msvc"
# -msvc is not supported for non-x86 targets; use a default.
return "i686-pc-windows-msvc"
def add_tool_substitutions(self, tools, search_dirs=None):
if not search_dirs:
search_dirs = [self.config.llvm_tools_dir]
if lit.util.is_string(search_dirs):
search_dirs = [search_dirs]
tools = [x if isinstance(x, ToolSubst) else ToolSubst(x) for x in tools]
search_dirs = os.pathsep.join(search_dirs)
substitutions = []
for tool in tools:
match = tool.resolve(self, search_dirs)
# Either no match occurred, or there was an unresolved match that
# is ignored.
if not match:
continue
subst_key, tool_pipe, command = match
# An unresolved match occurred that can't be ignored. Fail without
# adding any of the previously-discovered substitutions.
if not command:
return False
substitutions.append((subst_key, tool_pipe + command))
self.config.substitutions.extend(substitutions)
return True
def add_err_msg_substitutions(self):
# Python's strerror may not supply the same message
# as C++ std::error_code. One example of such a platform is
# Visual Studio. errc_messages may be supplied which contains the error
# messages for ENOENT, EISDIR, EINVAL and EACCES as a semi colon
# separated string. LLVM testsuites can use get_errc_messages in cmake
# to automatically get the messages and pass them into lit.
errc_messages = getattr(self.config, "errc_messages", "")
if len(errc_messages) != 0:
(errc_enoent, errc_eisdir, errc_einval, errc_eacces) = errc_messages.split(
";"
)
self.config.substitutions.append(("%errc_ENOENT", "'" + errc_enoent + "'"))
self.config.substitutions.append(("%errc_EISDIR", "'" + errc_eisdir + "'"))
self.config.substitutions.append(("%errc_EINVAL", "'" + errc_einval + "'"))
self.config.substitutions.append(("%errc_EACCES", "'" + errc_eacces + "'"))
else:
self.config.substitutions.append(
("%errc_ENOENT", "'" + os.strerror(errno.ENOENT) + "'")
)
self.config.substitutions.append(
("%errc_EISDIR", "'" + os.strerror(errno.EISDIR) + "'")
)
self.config.substitutions.append(
("%errc_EINVAL", "'" + os.strerror(errno.EINVAL) + "'")
)
self.config.substitutions.append(
("%errc_EACCES", "'" + os.strerror(errno.EACCES) + "'")
)
def use_default_substitutions(self):
tool_patterns = [
ToolSubst("FileCheck", unresolved="fatal"),
# Handle these specially as they are strings searched for during
# testing.
ToolSubst(
r"\| \bcount\b",
command=FindTool("count"),
verbatim=True,
unresolved="fatal",
),
ToolSubst(
r"\| \bnot\b",
command=FindTool("not"),
verbatim=True,
unresolved="fatal",
),
]
self.config.substitutions.append(("%python", '"%s"' % (sys.executable)))
self.add_tool_substitutions(tool_patterns, [self.config.llvm_tools_dir])
self.add_err_msg_substitutions()
def use_llvm_tool(
self,
name,
search_env=None,
required=False,
quiet=False,
search_paths=None,
use_installed=False,
):
"""Find the executable program 'name', optionally using the specified
environment variable as an override before searching the build directory
and then optionally the configuration's PATH."""
# If the override is specified in the environment, use it without
# validation.
tool = None
if search_env:
tool = self.config.environment.get(search_env)
if not tool:
if search_paths is None:
search_paths = [self.config.llvm_tools_dir]
# Use the specified search paths.
path = os.pathsep.join(search_paths)
tool = lit.util.which(name, path)
if not tool and use_installed:
# Otherwise look in the path, if enabled.
tool = lit.util.which(name, self.config.environment["PATH"])
if required and not tool:
message = "couldn't find '{}' program".format(name)
if search_env:
message = message + ", try setting {} in your environment".format(
search_env
)
self.lit_config.fatal(message)
if tool:
tool = os.path.normpath(tool)
if not self.lit_config.quiet and not quiet:
self.lit_config.note("using {}: {}".format(name, tool))
return tool
def use_clang(
self,
additional_tool_dirs=[],
additional_flags=[],
required=True,
use_installed=False,
):
"""Configure the test suite to be able to invoke clang.
Sets up some environment variables important to clang, locates a
just-built or optionally an installed clang, and add a set of standard
substitutions useful to any test suite that makes use of clang.
"""
# Clear some environment variables that might affect Clang.
#
# This first set of vars are read by Clang, but shouldn't affect tests
# that aren't specifically looking for these features, or are required
# simply to run the tests at all.
#
# FIXME: Should we have a tool that enforces this?
# safe_env_vars = (
# 'TMPDIR', 'TEMP', 'TMP', 'USERPROFILE', 'PWD',
# 'MACOSX_DEPLOYMENT_TARGET', 'IPHONEOS_DEPLOYMENT_TARGET',
# 'VCINSTALLDIR', 'VC100COMNTOOLS', 'VC90COMNTOOLS',
# 'VC80COMNTOOLS')
possibly_dangerous_env_vars = [
"COMPILER_PATH",
"RC_DEBUG_OPTIONS",
"CINDEXTEST_PREAMBLE_FILE",
"LIBRARY_PATH",
"CPATH",
"C_INCLUDE_PATH",
"CPLUS_INCLUDE_PATH",
"OBJC_INCLUDE_PATH",
"OBJCPLUS_INCLUDE_PATH",
"LIBCLANG_TIMING",
"LIBCLANG_OBJTRACKING",
"LIBCLANG_LOGGING",
"LIBCLANG_BGPRIO_INDEX",
"LIBCLANG_BGPRIO_EDIT",
"LIBCLANG_NOTHREADS",
"LIBCLANG_RESOURCE_USAGE",
"LIBCLANG_CODE_COMPLETION_LOGGING",
]
# Clang/Win32 may refer to %INCLUDE%. vsvarsall.bat sets it.
if platform.system() != "Windows":
possibly_dangerous_env_vars.append("INCLUDE")
self.clear_environment(possibly_dangerous_env_vars)
# Tweak the PATH to include the tools dir and the scripts dir.
# Put Clang first to avoid LLVM from overriding out-of-tree clang
# builds.
exe_dir_props = [
self.config.name.lower() + "_tools_dir",
"clang_tools_dir",
"llvm_tools_dir",
]
paths = [
getattr(self.config, pp)
for pp in exe_dir_props
if getattr(self.config, pp, None)
]
paths = additional_tool_dirs + paths
self.with_environment("PATH", paths, append_path=True)
lib_dir_props = [
self.config.name.lower() + "_libs_dir",
"llvm_shlib_dir",
"llvm_libs_dir",
]
lib_paths = [
getattr(self.config, pp)
for pp in lib_dir_props
if getattr(self.config, pp, None)
]
if platform.system() == "AIX":
self.with_environment("LIBPATH", lib_paths, append_path=True)
else:
self.with_environment("LD_LIBRARY_PATH", lib_paths, append_path=True)
shl = getattr(self.config, "llvm_shlib_dir", None)
pext = getattr(self.config, "llvm_plugin_ext", None)
if shl:
self.config.substitutions.append(("%llvmshlibdir", shl))
if pext:
self.config.substitutions.append(("%pluginext", pext))
# Discover the 'clang' and 'clangcc' to use.
self.config.clang = self.use_llvm_tool(
"clang",
search_env="CLANG",
required=required,
search_paths=paths,
use_installed=use_installed,
)
if self.config.clang:
self.config.available_features.add("clang")
builtin_include_dir = self.get_clang_builtin_include_dir(self.config.clang)
tool_substitutions = [
ToolSubst(
"%clang", command=self.config.clang, extra_args=additional_flags
),
ToolSubst(
"%clang_analyze_cc1",
command="%clang_cc1",
extra_args=["-analyze", "%analyze", "-setup-static-analyzer"]
+ additional_flags,
),
ToolSubst(
"%clang_cc1",
command=self.config.clang,
extra_args=[
"-cc1",
"-internal-isystem",
builtin_include_dir,
"-nostdsysteminc",
]
+ additional_flags,
),
ToolSubst(
"%clang_cpp",
command=self.config.clang,
extra_args=["--driver-mode=cpp"] + additional_flags,
),
ToolSubst(
"%clang_cl",
command=self.config.clang,
extra_args=["--driver-mode=cl"] + additional_flags,
),
ToolSubst(
"%clang_dxc",
command=self.config.clang,
extra_args=["--driver-mode=dxc"] + additional_flags,
),
ToolSubst(
"%clangxx",
command=self.config.clang,
extra_args=["--driver-mode=g++"] + additional_flags,
),
]
self.add_tool_substitutions(tool_substitutions)
self.config.substitutions.append(("%resource_dir", builtin_include_dir))
# There will be no default target triple if one was not specifically
# set, and the host's architecture is not an enabled target.
if self.config.target_triple:
self.config.substitutions.append(
(
"%itanium_abi_triple",
self.make_itanium_abi_triple(self.config.target_triple),
)
)
self.config.substitutions.append(
("%ms_abi_triple", self.make_msabi_triple(self.config.target_triple))
)
else:
if not self.lit_config.quiet:
self.lit_config.note(
"No default target triple was found, some tests may fail as a result."
)
self.config.substitutions.append(("%itanium_abi_triple", ""))
self.config.substitutions.append(("%ms_abi_triple", ""))
# The host triple might not be set, at least if we're compiling clang
# from an already installed llvm.
if self.config.host_triple and self.config.host_triple != "@LLVM_HOST_TRIPLE@":
self.config.substitutions.append(
(
"%target_itanium_abi_host_triple",
"--target=" + self.make_itanium_abi_triple(self.config.host_triple),
)
)
else:
self.config.substitutions.append(("%target_itanium_abi_host_triple", ""))
# TODO: Many tests work across many language standards. Before
# https://discourse.llvm.org/t/lit-run-a-run-line-multiple-times-with-different-replacements/64932
# has a solution, provide substitutions to conveniently try every standard with LIT_CLANG_STD_GROUP.
clang_std_group = int(os.environ.get("LIT_CLANG_STD_GROUP", "0"))
clang_std_values = ("98", "11", "14", "17", "20", "2b")
def add_std_cxx(s):
t = s[8:]
if t.endswith("-"):
t += clang_std_values[-1]
l = clang_std_values.index(t[0:2] if t[0:2] != "23" else "2b")
h = clang_std_values.index(t[3:5])
# Let LIT_CLANG_STD_GROUP=0 pick the highest value (likely the most relevant
# standard).
l = h - clang_std_group % (h - l + 1)
self.config.substitutions.append((s, "-std=c++" + clang_std_values[l]))
add_std_cxx("%std_cxx98-14")
add_std_cxx("%std_cxx98-")
add_std_cxx("%std_cxx11-14")
add_std_cxx("%std_cxx11-")
add_std_cxx("%std_cxx14-")
add_std_cxx("%std_cxx17-20")
add_std_cxx("%std_cxx17-")
add_std_cxx("%std_cxx20-")
add_std_cxx("%std_cxx23-")
# FIXME: Find nicer way to prohibit this.
def prefer(this, to):
return '''\"*** Do not use '%s' in tests, use '%s'. ***\"''' % (to, this)
self.config.substitutions.append((" clang ", prefer("%clang", "clang")))
self.config.substitutions.append(
(r" clang\+\+ ", prefer("%clangxx", "clang++"))
)
self.config.substitutions.append(
(" clang-cc ", prefer("%clang_cc1", "clang-cc"))
)
self.config.substitutions.append(
(" clang-cl ", prefer("%clang_cl", "clang-cl"))
)
self.config.substitutions.append(
(
" clang -cc1 -analyze ",
prefer("%clang_analyze_cc1", "clang -cc1 -analyze"),
)
)
self.config.substitutions.append(
(" clang -cc1 ", prefer("%clang_cc1", "clang -cc1"))
)
self.config.substitutions.append(
(" %clang-cc1 ", '''\"*** invalid substitution, use '%clang_cc1'. ***\"''')
)
self.config.substitutions.append(
(" %clang-cpp ", '''\"*** invalid substitution, use '%clang_cpp'. ***\"''')
)
self.config.substitutions.append(
(" %clang-cl ", '''\"*** invalid substitution, use '%clang_cl'. ***\"''')
)
def use_lld(self, additional_tool_dirs=[], required=True, use_installed=False):
"""Configure the test suite to be able to invoke lld.
Sets up some environment variables important to lld, locates a
just-built or optionally an installed lld, and add a set of standard
substitutions useful to any test suite that makes use of lld.
"""
# Tweak the PATH to include the tools dir and the scripts dir.
exe_dir_props = [
self.config.name.lower() + "_tools_dir",
"lld_tools_dir",
"llvm_tools_dir",
]
paths = [
getattr(self.config, pp)
for pp in exe_dir_props
if getattr(self.config, pp, None)
]
paths = additional_tool_dirs + paths
self.with_environment("PATH", paths, append_path=True)
lib_dir_props = [
self.config.name.lower() + "_libs_dir",
"lld_libs_dir",
"llvm_shlib_dir",
"llvm_libs_dir",
]
lib_paths = [
getattr(self.config, pp)
for pp in lib_dir_props
if getattr(self.config, pp, None)
]
self.with_environment("LD_LIBRARY_PATH", lib_paths, append_path=True)
# Discover the LLD executables to use.
ld_lld = self.use_llvm_tool(
"ld.lld", required=required, search_paths=paths, use_installed=use_installed
)
lld_link = self.use_llvm_tool(
"lld-link",
required=required,
search_paths=paths,
use_installed=use_installed,
)
ld64_lld = self.use_llvm_tool(
"ld64.lld",
required=required,
search_paths=paths,
use_installed=use_installed,
)
wasm_ld = self.use_llvm_tool(
"wasm-ld",
required=required,
search_paths=paths,
use_installed=use_installed,
)
was_found = ld_lld and lld_link and ld64_lld and wasm_ld
tool_substitutions = []
if ld_lld:
tool_substitutions.append(ToolSubst(r"ld\.lld", command=ld_lld))
self.config.available_features.add("ld.lld")
if lld_link:
tool_substitutions.append(ToolSubst("lld-link", command=lld_link))
self.config.available_features.add("lld-link")
if ld64_lld:
tool_substitutions.append(ToolSubst(r"ld64\.lld", command=ld64_lld))
self.config.available_features.add("ld64.lld")
if wasm_ld:
tool_substitutions.append(ToolSubst("wasm-ld", command=wasm_ld))
self.config.available_features.add("wasm-ld")
self.add_tool_substitutions(tool_substitutions)
return was_found
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